A Benzobisimidazolium-Based Fluorescent and Colorimetric Chemosensor for CO2

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• 作者：Zhiqian Guo ; Na Ri Song ; Jong Hun Moon ; Myounwoo Kim ; Eun Jin Jun ; Jiyoung Choi ; Jin Yong Lee ; Christopher W. Bielawski ; Jonathan L. Sessler ; Juyoung Yoon
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：October 31, 2012
• 年：2012
• 卷：134
• 期：43
• 页码：17846-17849
• 全文大小：294K
• 年卷期：v.134,no.43(October 31, 2012)
• ISSN：1520-5126

文摘

A new sensor for the fluorescent and colorimetric detection of CO₂ is described. The system utilizes fluoride to activate a tetrapropyl benzobisimidazolium salt and operates in the absence of an exogenous base. On the basis of spectroscopic and theoretical analyses, the mode of action of the present system is ascribed to the fluoride-induced formation of an N-heterocyclic carbene intermediate that reacts with CO₂ to form an imidazolium carboxylate.